ChargeOver - ChargeOver automates recurring billing, subscription billing, & payment acceptance. A SaaS that integrates with Xero, Quickbooks, & has an API. Free trial.
Donorhut - Donorhut offers cloud fundraising software for charities and non-profits of any size.
MinuteDock - Web-based time tracking software designed to integrate with the Xero accounting package.
Txt2Give - Txt2Give helps churches, non-profits, schools, alumni associations, and political campaigns receive donations with text messages.
fusebill - Fusebill is the leading recurring billing and subscription management software for businesses. Try Fusebill for subscription billing made easy!
Little Green Light - Illuminating Data. Advancing Nonprofits.